Cover for a food container



FIG. 1 is a perspective view of a cover for a food container showing our new design;

FIG. 2 is a top view;

FIG. 3 is a bottom view; and,

FIG. 4 is a side view.

The broken lines in the drawing are for illustrative purpose and form no part of the claimed design. 

The ornamental design for a cover for a food container, as shown and described. 